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ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
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ÀWỌN OHUN WÍWỌ̀
Ferrite Toroid Core: Copper-Zinc Ferrite Sintered at 1150 °C (Snoek 1948, Ex. I)
A soft ferrite ring core for coils and transformers: copper, zinc and iron oxides with a little brownstone, pressed into a ring and sintered at 1150 °C in oxygen. Snoek's ring had an initial permeability of 175.
Source: J. L. Snoek, US 2,452,530 (Philips, 1948), Example I and its table. The violet iron oxide has its own blueprint (precipitated hematite calcined at 1000-1100 °C, after Nurdini et al. 2022); Snoek does not say how his was made. Picture: the patent's Fig. 4, the ring core.
Ilọsíwájú
2 days
Ìlànà
1
1
Weigh 20 : 30 : 50 mol % and 1 % brownstone
Weigh 20 : 30 : 50 mol % and 1 % brownstone
Mix 20 mol % pure copper oxide, 30 mol % pure zinc oxide and 50 mol % pure violet iron oxide, and add 1 % by weight of brownstone (manganese dioxide). Ours, by weight: 13.24 g copper oxide, 20.32 g zinc oxide and 66.44 g iron oxide per 100 g, plus 1 g brownstone. Snoek does not say what makes it 'violet'; violet iron oxide has its own blueprint.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Oxide Bàbà13.24 g
Lulú Sínkì Ọ́ksídì20.32 g
Iron oxide aláwọ̀ àlùkò66.44 g
Dioksidi manganesi (pirolusiti)1 gÀwọn irinṣẹ́ tí a nílò:
Òǹwọ̀n ìdọ́gba
Ìbòjú Eruku2
2
Grind half an hour in an iron ball mill
Grind half an hour in an iron ball mill
Grind the mixture for half an hour in a mill with iron balls.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ Lílọ Bọ́ọ̀lù IrinÌbòjú Eruku3
3
Press a ring at 4 tons per cm²
Press a ring at 4 tons per cm²
Press the powder at 4 tons per square centimetre into a ring 3 cm across with a 4 × 4 mm cross-section.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìtẹ̀ háídírọ́líìkì
Ìdà Títẹ̀ ÒrùkaÌbòjú Eruku4
4
Sinter at 1150 °C in oxygen, cool 5–10 °C a minute
Sinter at 1150 °C in oxygen, cool 5–10 °C a minute
Sinter the ring at 1150 °C in a current of oxygen. Example I heats for 1 hour and cools in the oxygen at 5 to 10 °C per minute. Snoek's ring had an initial permeability of 175, measured at room temperature at 2 kHz.
Àwọn irinṣẹ́ tí a nílò:
Ààrò Ọ̀pọ́n
Oxygen
Àgbá gáàsì tí a fi ìfúnpá kún
Pirómítà
Ẹmú Ìkòkò Ìyọ́
Ìbọ̀wọ́ Tí Ń Fara Da OoruÀwọn ohun-èlò
4- 13.24 gÀyè
- 20.32 gÀyè
- 66.44 gÀyè
Àwọn irinṣẹ́ tó nílò
11- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.